Unbolting the rear shock makes it possible to get the valve cover out. Otherwise, I couldn’t get it out. My biggest problems with the valve check was being able to refit the valve cover and keeping the o-ring/seal in place. It fell out every time. I used a small amount of tacky grease to hold the o-ring in place. Find feeler gauges like the ones robot is using. The standard feeler gauges are hard to use. I did the two intakes from the top reaching down as opposed to using the access panel. Two of my 3 valves were tight.
Thanks. I haven't seen much about these new motors. @bigissue, these engines do not have hydraulic self-adjusting valvetrains. Valves--especially the exhaust valves get longer during use, reducing their clearance and then they won't seal well. If the valves don't seal against the seat because the valve-train is holding it open, the valve and seat will get hotter than they need to, which further accelerates their stretching and seat wear. During that time, the engine just won't have as much power as it should because the engine can't keep compression after the sparkplug ignites the fuel-air mixture. I've heard from a Vespa mechanic of an engine that would not start from valve-clearance issues alone, likely because modern Vespas, already have an engine-decompression system to reduce the load on the starter, and having leaking valves might lower it until the point where it wouldn't start at all.
got a problem with a primavera 50 (carburation and 4stroke)... it starts, revs up itself and inmediatly after 10 secs stop. Then if you let it rest 2 min it will start again with no problem and stop again......any thoughts?? carburetor , valve adjustment, air leak.......???
Great video!! I was wondering if it is the same way of adjusting the valves for a 4 valve engine? (I have a 4 valve SOHC Piaggio engine for my Aprilia Atlantic 2007)
why is it according to the manual it's both .08 mm for both intake and exhaust? and robot uses .004 for the intake and .006 for the exhaust. I'm a little confuse.
Good day. Hello to you from faraway Kazakhstan. If it is not difficult to tell me please. I have a Piaggio ZIP engine 125 carburetor. I want to install it on the Vespa LH 50 2t scooter. Which sdi switch is suitable for starting this engine ????. In addition to the ACI503. I will not have an immobolizer. Thanks for answering.
Hopefully, I can ask a question here? I take delivery next week of a new Primavera. As I live 200 miles from the dealer (and 150 miles from the nearest Vespa dealer). I can change the engine oil and filter myself as well as the gear oil, but adjusting the valves is well beyond my skill set. As the valves on the engine shown here were slightly tight with just a few miles, my questions are these? Are they tight from the factory or do they tighten up with initial use? Is there any point in having the dealer check the clearances on the brand new engine before they ship it to me? If not, will I need to transport my new scooter to an authorized dealer to have them checked at 625 miles? Thanks much.
My experience : A reputable dealer will not let a scooter leave with bad valves...they will only get worse by 600 miles. If you are careful to not overheat the engine for first 300-500 miles, valves should be good till 1200, when you should probably return to that dealer for a checkup. Again. a reputable dealer will understand your geographical problem in being "overdue", because Vespas don't have valve issues as a common thing, anyway. Valves just slightly out are not a fatal or totally uncommon problem even for well manufactured scooter motors. For sports and race cars, maybe.
hello mr robot,i just take back my primavera 3v from a workshop that lies to me..n when i check the head cover i realize i lost 1 part bcoz i see in ur video u have it there..what u call it crank lock or what..im sorry bcoz im new ...is it ok i didnt hve it there?
loss power after valve adjustment, setting was .10mm and .15mm @top dead center, still no power, before adjustment - power is very good? what makes a problem? pls help. thank you
Frank Pa check the valve... If there any crack or you haven't polishing it... Also check if your valve was bended or not... It's really important thing for compression
Atanasius Kurnia Correct valve clearance for these bikes is .08mm for both intake and exhaust, according to my 2015 Sprint owners manual. I can't tell if Robot made a mistake, or if his shop prefers these looser clearances based on their experience.
hey people valve adjusment on first service are vespa crazy get a 300 gts had it since 2009 change the oils new exhaust tyres engie mounts and tighting steering bearings all cheap to do and still going after 40000kms forget this engine
Unbolting the rear shock makes it possible to get the valve cover out. Otherwise, I couldn’t get it out. My biggest problems with the valve check was being able to refit the valve cover and keeping the o-ring/seal in place. It fell out every time. I used a small amount of tacky grease to hold the o-ring in place. Find feeler gauges like the ones robot is using. The standard feeler gauges are hard to use. I did the two intakes from the top reaching down as opposed to using the access panel. Two of my 3 valves were tight.
My favorite scooter mechanic on CZcams. Thank you for your videos. 👍
Thanks. I haven't seen much about these new motors.
@bigissue, these engines do not have hydraulic self-adjusting valvetrains. Valves--especially the exhaust valves get longer during use, reducing their clearance and then they won't seal well. If the valves don't seal against the seat because the valve-train is holding it open, the valve and seat will get hotter than they need to, which further accelerates their stretching and seat wear. During that time, the engine just won't have as much power as it should because the engine can't keep compression after the sparkplug ignites the fuel-air mixture. I've heard from a Vespa mechanic of an engine that would not start from valve-clearance issues alone, likely because modern Vespas, already have an engine-decompression system to reduce the load on the starter, and having leaking valves might lower it until the point where it wouldn't start at all.
This engine is also on the 2012-2014 Vespa Lx 125/150 3 Valvole i.e. here in Europe. I have one in Portovenere green :)
got a problem with a primavera 50 (carburation and 4stroke)... it starts, revs up itself and inmediatly after 10 secs stop. Then if you let it rest 2 min it will start again with no problem and stop again......any thoughts?? carburetor , valve adjustment, air leak.......???
Great video!! I was wondering if it is the same way of adjusting the valves for a 4 valve engine?
(I have a 4 valve SOHC Piaggio engine for my Aprilia Atlantic 2007)
I womder if this is the same for the IGet engines?
Also applies to 2013 Vespa LX 150 3V.
Hi Robot, how you adjust the valves when there is a king of ball joint on the end (have a ET4 with this arrangements)
Great video ! Tks you
How can I get a service manual for VXL150 3V?
why is it according to the manual it's both .08 mm for both intake and exhaust? and robot uses .004 for the intake and .006 for the exhaust. I'm a little confuse.
0.10 for Both is fine
So why not 0.08mm bor both sides? I am confused also
He uses inch not millimiter gauge
Good day. Hello to you from faraway Kazakhstan. If it is not difficult to tell me please. I have a Piaggio ZIP engine 125 carburetor. I want to install it on the Vespa LH 50 2t scooter. Which sdi switch is suitable for starting this engine ????. In addition to the ACI503. I will not have an immobolizer. Thanks for answering.
Where can i get some cheap new intake valves for 2020 liberty 150 ?
I have a 125cc iget 2021 3v engine. Is the method the same for finding TDC?
In 0.14 ex0.16?
good job
I just paid 300 dollars for this service! Lol I should have watched this video before hand and done it myself! Next time!!!
Quick question, the owners manual says both I take and exhaust should be 0.8
how to change Sora tongue vespa?
Hopefully, I can ask a question here? I take delivery next week of a new Primavera. As I live 200 miles from the dealer (and 150 miles from the nearest Vespa dealer). I can change the engine oil and filter myself as well as the gear oil, but adjusting the valves is well beyond my skill set. As the valves on the engine shown here were slightly tight with just a few miles, my questions are these? Are they tight from the factory or do they tighten up with initial use? Is there any point in having the dealer check the clearances on the brand new engine before they ship it to me? If not, will I need to transport my new scooter to an authorized dealer to have them checked at 625 miles? Thanks much.
My experience : A reputable dealer will not let a scooter leave with bad valves...they will only get worse by 600 miles. If you are careful to not overheat the engine for first 300-500 miles, valves should be good till 1200, when you should probably return to that dealer for a checkup. Again. a reputable dealer will understand your geographical problem in being "overdue", because Vespas don't have valve issues as a common thing, anyway. Valves just slightly out are not a fatal or totally uncommon problem even for well manufactured scooter motors. For sports and race cars, maybe.
hello mr robot,i just take back my primavera 3v from a workshop that lies to me..n when i check the head cover i realize i lost 1 part bcoz i see in ur video u have it there..what u call it crank lock or what..im sorry bcoz im new ...is it ok i didnt hve it there?
Om kuku nya item bgt ? Sama jambang ga pernah di cukur ?
hello I need 2005 piaggio fly 150 scooter carburetor setup and hose connection picture information .... Thanks
Soner Yaman they wont reply they never do
Mi moto tiene ese motor pero a perdido fuerza puede ser un ajuste de válvulas ya tiene 12345klm y nunca se a echo
loss power after valve adjustment, setting was .10mm and .15mm @top dead center, still no power, before adjustment - power is very good? what makes a problem? pls help. thank you
Frank Pa check the valve... If there any crack or you haven't polishing it... Also check if your valve was bended or not... It's really important thing for compression
It is 0,10mm intake and 0,15 mm exhaust outtake as far as I know
adjustment in 0.8 and out 0.8 best setting for 3v engine
@@rbhgaming1024 yes as described in the manual
Are the valve clearances the same spec on the older engine (2009 Fly 150)? Thanks! All of your videos are great BTW. You guys are awesome!
My first thought. Robot legend!
Hi iam from india ,pl upload vespa Geared 150 4t engine complete overhaul
do you have a connecting rod for the vespa sprint1503vie
Give us a call. 619-280-1718
sorry we can't speak english this live just have to open the dictionary first and we have trouble finding that item and we are far away in indonesia
#vespa Motorsport maybe you can call using the line
full enjan ripering dikhao
the valve adjusment? intake 0,04 exhaust 0,06???
Atanasius Kurnia Correct valve clearance for these bikes is .08mm for both intake and exhaust, according to my 2015 Sprint owners manual. I can't tell if Robot made a mistake, or if his shop prefers these looser clearances based on their experience.
Atanasius Kurnia .08mm is .003 of an inch. Robot is using non-metric tools, .004 and .006 of an inch.
Hi
hey people valve adjusment on first service are vespa crazy get a 300 gts had it since 2009 change the oils new exhaust tyres engie mounts and tighting steering bearings all cheap to do and still going after 40000kms forget this engine
Is Robot drunk?
My first thought. Legend
I probably bored up to 200cc